Q. The site where repressor binds the DNA is the ______________

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Q. Recruitment of RNA polymerase to the promoter is a ___________

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Q. The proteins of which of the following genes are regularly needed for cellular activity?

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Q. Which of the following are the products of the constitutive gene?

i. Involved in the synthesis of structural elements of the cell
ii. Involved in catabolic pathway
iii. Involved in anabolic pathway
iv. Synthesized continuously

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Q. Which of the following is not an example of allosteric regulation?

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Q. Operons are ___________

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Q. Which of the following are correct according to operons?

i) Consists of multiple genes organized between a promoter and a terminator
ii) Member genes regulate with coordination
iii) Usually controlled by autogenous transcription
iv) Contains genes for stress tolerance exclusively

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Q. Choose the correct pair among the following.

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Q. Which of the following is not present in the β-galactosidase structural gene and thus is not transcribed by the same promoter?

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Q. Glucose, as the carbon source, is the first choice by bacteria even if other sugars are available. The mechanism behind this selectivity is ___________

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Q. The lac operon is regulated by cAMP by ___________

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Q. Tryptophan operon in E. coli is a repressible operon.

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Q. Which of the following is true about tryptophan operon?

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Q. The expression of the tryptophan operon is independent of the availability of tryptophan in culture media.

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Q. The functional unit in which genes are arranged consecutively is known as ___________

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Q. The investigation of the lac operon for the metabolism of lactose was done by __________

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Q. Presence of lactose itself induces the production of β-galactoside transferase.

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Q. How many enzymes are produced in the lac operon under the same promoter?

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Q. Defects in which regions can affect the activity of the lac operon?

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Q. If the lac operon of the genome of bacteria is always active it has a defect in which region of the operon?

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